918070/FP0811 4-15 Printed in U.S.A.
Battery
In case of acid contact, wash immediately with water
for several minutes. In case of eye contact, get medical
attention immediately.
Model 503Z – serial numbers AH02282 and before:
the battery (1, Figure 4-11) is located under the engine
cover in front of the oil cooler.
Model 503Z excavators – serial number AJ02993
and up and Model 603 – all serial numbers: the bat-
tery (2, Figure 4-11) is located under the cab near the
rear of the undercarriage.
Battery cables must be clean and tight. Remove any
acid or corrosion from the battery and cables using a
sodium bicarbonate and water solution. Cover the bat-
tery terminals and cable ends with battery-saver grease.
Note: The battery is maintenance-free and requires no
other service.
Using a Booster Battery (Jump-Starting)
Use care when jump-starting the machine. The booster
battery must be 12-volt.
Before servicing the battery or electrical sys-
tem, disconnect battery from the electrical
system by turning the battery disconnect
switch to the “OFF” position.
Explosive gas is produced while a battery is
in use or being charged. Keep flames or
sparks away from the battery area. ALWAYS
charge the battery in a wellventilated area.
Do not jump-start a frozen battery, or it may
explode. A discharged battery can freeze at
14°F (10°C).
To prevent short circuits keep metal parts on
your clothing and metal watchbands away
from the positive (+) terminal of the battery.
Never lay a metal object on top of a battery,
because a short circuit can result. Battery
acid is harmful to skin and fabrics. If acid
spills, follow these first-aid tips:
Immediately remove any clothing on which
acid spill.
• If acid contacts skin, rinse the affected
area with running water for 10 to 15 minutes.
• If acid contacts eyes, flood eyes with run-
ning water for 10 to 15 minutes. See a doctor
at once. Never use any medication or eye
drops unless prescribed by the doctor.
• To neutralize acid spilled on the floor, use
one of the following mixtures:
• 0.5 kg (1 lbs.) of baking soda in 4 L (4
qts.) of water.
• 0.5 L (0.5 qts.) of household ammonia in
4 L (4 qts.) of water.
• Keep arcs, sparks, flames and lighted
tobacco away from batteries. When
jump-starting from a booster battery,
make final connection (negative) at
engine frame away from the battery. A
discharged battery can create flammable
gases. Sparks or open flames can cause
this gas, and the battery, to explode.
• DO NOT jump-start or charge a frozen
battery. Warm battery to 60°F (16°C)
before connecting to a charger. Unplug
charger before connecting or discon-
necting cables to battery.
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